S
M
T
W
T
F
S
26
89°
72°
27
89°
72°
28
88°
71°
29
86°
71°
30
87°
66°
31
81°
65°
1
81°
65°
2
82°
66°
3
82°
68°
4
83°
67°
5
84°
65°
6
86°
70°
7
88°
71°
8
86°
70°
9
84°
69°
10
84°
64°
11
84°
63°
12
83°
64°
13
84°
68°
14
86°
70°
15
88°
68°
16
87°
71°
17
89°
70°
18
88°
67°
19
86°
62°
20
82°
62°
21
80°
63°
22
80°
62°
23
81°
62°
24
81°
63°
25
82°
62°
26
83°
61°
27
84°
62°
28
82°
63°
29
82°
61°
30
79°
61°
31
82°
65°
1
85°
60°
2
83°
60°
3
78°
59°
4
79°
60°
5
80°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Heatherton
Heatherton's August 2026 forecast shows daily high temperatures ranging from 78° to 89°, with overnight lows between 59° and 72°. The average high for August is 84° with an average low of 65°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Heatherton. See also: September | October | November.